Coating system of bifacial hydrophilic film

Abstract

The invention discloses a coating system of a bifacial hydrophilic film. The system comprises a substrate coil discharge roller, an upper-layer hydrophilic film coil discharge roller, a lower-layer hydrophilic film coil discharge roller, a first compound rolling wheel set, a second compound rolling wheel set, an upper-layer hydrophilic film coating die head, a lower-layer hydrophilic film coatingdie head, a drying tunnel and a low-temperature drying channel. A substrate is discharged from the substrate coil discharge roller, sequentially passes through a guide roller, the lower-layer hydrophilic film coating die head, the drying tunnel, the first compound rolling wheel set, the upper-layer hydrophilic film coating die head, the low-temperature drying channel and the second compound rolling wheel set, and is then transferred to a cutting machine; a lower-layer PE film is compounded with the substrate by means of the first compound rolling wheel set; and an upper-layer PE film is compounded with the substrate by means of the second compound rolling wheel set. The coating system of the bifacial hydrophilic film, disclosed by the invention, can ensure that the bifacial hydrophilic film can be processed and manufactured, and the processed bifacial hydrophilic film can greatly improve the blood diffusion performance of the hydrophilic film of a blood glucose test strip so as to further improve the detection accuracy of blood glucose indexes.

Description

technical field [0001] The invention relates to a coating system for a double-sided hydrophilic film. Background technique [0002] Blood glucose test strips have been widely used in blood glucose rapid diagnostic testing. In blood glucose test strips, in addition to oxidoreductase and conductive media, the hydrophilic membrane affects the detection accuracy. When the blood sample to be tested is dropped on the blood glucose test strip, the hydrophilic membrane can quickly spread the blood drop and draw it into the working area of ​​the electrode to ensure the blood glucose detection. [0003] In order to improve the detection accuracy of blood glucose test strips, the diffusion performance of the hydrophilic membrane can only be improved when the oxidoreductase and the conductive medium have been determined. How to improve the performance of the hydrophilic membrane of blood glucose test strips is an important issue before those skilled in the art. Contents of the inven...

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